package com.theima.socket.socketdemo4;

import java.io.IOException;
import java.net.DatagramPacket;
import java.net.InetAddress;
import java.net.MulticastSocket;

/**
 * @program: Myset
 * @description:  组播接受端
 * @author: xuejingjing
 * @create: 2021-06-25 21:54
 **/
public class ServerDemo {
    public static void main(String[] args) throws IOException {

        //关联端口号10000
        MulticastSocket ms = new MulticastSocket(10000);
        DatagramPacket dp = new DatagramPacket(new byte[1024],1024);

        //把当前计算机绑定一个组播地址,表示添加到这一组中。
        ms.joinGroup(InetAddress.getByName("224.0.1.0"));

        ms.receive(dp);

        byte[] data = dp.getData();

        int length = dp.getLength();

        System.out.println(new String(data,0,length));

        ms.close();
    }
}
